优化网络消息处理的睡眠时间，减少CPU占用；扩展连接配置以支持更多参数

steamnet/steam_message_handler.cpp

@@ -52,7 +52,7 @@ void SteamMessageHandler::run() {
         pollMessages();
 
         // Sleep a bit to avoid busy loop
-        std::this_thread::sleep_for(std::chrono::milliseconds(10));
+        std::this_thread::sleep_for(std::chrono::milliseconds(1));
     }
 }